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BC559B PNP Epitaxial Silicon Transistor

Discussion in 'Electronic Design' started by RsK, Apr 3, 2007.

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  1. RsK

    RsK Guest

    Hello anyone please describe its features?

    i gone through Data sheets but couldnt find the proper working? why it
    is used and how it is useful for 7 segment displays?


  2. Eeyore

    Eeyore Guest

    Read the data sheet you pea-brain !
  3. jasen

    jasen Guest

    it's used as a high side switch, google "transitor switch" .

  4. Eeyore

    Eeyore Guest

    It's a general purpose, medium to low voltage, low power, pnp transistor for
    heaven's sake ! Aside from its respectable (but commonplace these days) noise
    performance and good hFE, it is wholly unremarkable.

  5. @@

    @@ Guest


    My $.02 :-

    There's nothing forcing you to answer questions in this forum, so to
    grudgingly answer questions in such a gruff, insulting and condescending
    manner is completely uncalled for.

    If someone in your past treated you so thoughtlessly I apologize, but break
    the cycle.

    Actions and attitudes like yours are what keeps many from entering
    technology-related hobbies. Way to screw the future, pal!

  6. Eeyore

    Eeyore Guest

    (a) It's not a forum !

    (b) Where the heck are you posting from anyway ? I'll wager it's not s.e.d

    It most certainly is in a design 'forum' as you like to call it.

    No. Idiots who can't read the data sheet and understand it simply have no
    future. A modicum of simple mental competence is required to be a designer.

    The question would conceivably have suited sci.electronics.basics however. FYI
    the Fairchild data sheet says......

    Switching and Amplifier (transistor)
    • High Voltage: BC556, VCEO= -65V
    • Low Noise: BC559, BC560
    • Complement to BC546 ... BC 550

    It's virtually (it is) a generic small signal device.

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